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- Title
Does the Width of the Bony Cochlear Nerve Canal Predict the Outcomes of Cochlear Implantation?
- Authors
Chung, Juyong; Jang, Jeong Hun; Chang, Sun O.; Song, Jae-Jin; Cho, Sung-Woo; Kim, So Young; Lee, Jun Ho; Oh, Seung-Ha
- Abstract
A narrow bony cochlear nerve canal (BCNC) is associated with sensorineural hearing loss necessitating cochlear implantation (CI). This study evaluated the implications of BCNC width for post-CI outcomes. A total of 56 children who had received CIs were included. The patients were divided into three groups according to the width of the BCNC (Group 1: diameter < 1.4 mm, n=17; Group 2: diameter 1.4–2.0 mm, n=14; Group 3: diameter > 2.0 mm, n=25). The post-CI speech performances were compared among the three groups according to BCNC width. The correlation between BCNC width and post-CI speech performance was evaluated. Logistic regression analysis was also performed to investigate factors that can impact post-CI speech performance. Cochlear nerve deficiency (CND) occurred more frequently in Group 1. Groups 1 and 2 had significantly worse post-CI outcomes. Patients with intact cochlear nerves had significantly better post-CI outcomes than those with CND. When the cochlear nerve was intact, patients with a narrower BCNC showed less favorable results. Therefore, patients with either a narrow BCNC or CND seemed to have poorer outcomes. A narrow BCNC is associated with higher CND rates and poor outcomes. Measurement of BCNC diameter may help predict CI outcomes.
- Subjects
ACOUSTIC nerve; SPEECH evaluation; TREATMENT effectiveness; COCHLEAR implants; COMPUTED tomography; DEAFNESS; RETROSPECTIVE studies; DESCRIPTIVE statistics; ANATOMY
- Publication
BioMed Research International, 2018, Vol 2018, p1
- ISSN
2314-6133
- Publication type
Article
- DOI
10.1155/2018/5675848